snip copies the signal files (and, optionally,
annotation files) of the specified input-record, and generates a header
file, thereby creating the specified new-record. snip is usually used to
extract an excerpt of its input-record, using the -f and -t options (see below)
to specify the segment to be copied.

The program xform(1)
can also perform
this task, but offers additional flexibility (it can scale the signals,
resample them at a different frequency, rearrange them, select subsets
of them, or reformat them); snip is faster than xform, however.

Copy the specified annotator as well as the signal files.
Two or more annotator arguments, separated by spaces, can follow -a. An
annotator supplied via the standard input may be specified using ‘-’, but
only immediately after -a; in this case only, annotations are copied to
the standard output.